Funny Blonde Joke
A brunette was walking down some train tracks saying "21, 21, 21..." repeatedly. A blonde saw her and began to follow along. After a moment the blonde asked, "whatchya doin?" The brunette said "counting" and went back to chanting 21. The blonde asked if she could join the brunette and the brunette said "sure, hop up onto the tracks."
Both girls walked down the track saying 21 over and over. Eventually a train started coming down the tracks, horn blaring. When the rails started to rumble the brunette jumped down and walked away to a safe distance. A few seconds later the train hit the blonde, throwing her far out into the field dead.
After the train passed the brunette hopped back onto the tracks and resumed walking. Now, however, she chanted "22, 22, 22..."